Flexural fatigue behaviour of an asymmetric sandwich composite made of limestone and cork agglomerate

Andreazza, Ilaria; Infante, V.; Garcia, Madalena; Amaral, P.M.

doi:10.1016/j.ijfatigue.2019.105264

Cited by 7 publications

(2 citation statements)

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“…Sandwich structures, when under cyclic loading, are subject to core shear failure and face yielding. The occurrence of each failure mode depends on the thickness and strength of the faces [6][7][8]. Andreazza et al [7], using a solid core of cork agglomerate and glass fiber reinforced epoxy sheets, showed that the composites can sustain infinite cycles for maximum loading less than 45%.…”

Section: Introductionmentioning

confidence: 99%

“…The occurrence of each failure mode depends on the thickness and strength of the faces [6][7][8]. Andreazza et al [7], using a solid core of cork agglomerate and glass fiber reinforced epoxy sheets, showed that the composites can sustain infinite cycles for maximum loading less than 45%. Polymer matrix composites do not have a crystalline structure, nor can they deform plastically.…”

Section: Introductionmentioning

confidence: 99%

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Fatigue and Failure Analysis of Sandwich Composites using Two Types of Cross-Ply Glass Fibers Laminates and Epoxy Resin

Cheloni

Silveira²,

Lopes³

et al. 2022

J. Res. Updates Polym. Sci.

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Sandwich structures have become effective structural elements for engineering applications due to their good design flexibility. Understanding the material behavior under static and dynamic loads, as well as the failure mechanisms of these sandwich structures, is of great importance. This work evaluates the fatigue and static bending behavior of epoxy resin specimens and sandwich composites composed of an epoxy resin core with glass fiber laminated faces. The fatigue life, failure modes, and stiffness degradation of these specimens are determined experimentally. The specimens were cycled under constant amplitude and monitored by a data acquisition system that allowed continuous data collection. Three stages of failure were identified using microscope analyses and stiffness degradation curves. In the case of an imposed displacement of 2 mm, the sandwich structures were shown to have a significantly lower fatigue life than the epoxy resin specimens.

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